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STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS
Nominal - No. of
across
threads "a"
flats "b"
9/16-18UNF
11/16-16UN
13/16-16UN
1-14UNS
1 3/16-12UN
4-10
Width
Target value
(mm)
Nm
19
44
22
74
27
103
32
157
36
216
Tightening torque
kgm
Nm
4.5
35 to 54
7.5
54 to 93
10.5
84 to 132
16.0
128 to 186
22.0
177 to 245
WENAM00130
MAINTENANCE
Allowable range
kgm
3.5 to 5.5
5.5 to 9.5
8.5 to 13.5
13.0 to 19.0
18.0 to 25.0
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